Cite
 

Meaning of rate base

rate' base"

Pronunciation: [key]
  1. a guaranteed minimum amount or number used to compute advertising rates, as the number of subscribers to a publication.
  2. a basic amount or number used to compute charges to a customer, as the number of monthly phone calls.
  3. the valuation of property upon which tax rates are based.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.